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Topics - johnm37

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CB750 / Engine paint
« on: June 15, 2023, 09:05:27 PM »
The engine on my F2 is painted black. Recently it began to show it's age. The aluminium was showing through and had begun to corode.
About 3 years ago, i had my local motorcycle guy blast and paint my engine. He didn't do a good job. The aluminium is already showing. As the engine is out, now is a good time to repaint it. I'm reluctant to use the same painter. Will ordinary aerosol car paint work? Will it take the temperature?
Has anyone else repainted their engine?

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CB750 / 750 F2 chain damage to gearbox
« on: April 10, 2023, 06:49:57 PM »
Hi to everyone. I'm a new member having only just dicovered this forum. I don't like starting by asking for help but I've a problem.
I got my bike out for it's first ride of the year. It rode for a few yards and stopped. A piece of rag had tangled between the chain and front sproket. Then I made my big mistake. I slackened off the chain and tried to force the rag round the sprocket. I now have a big hole in my gearbox. The damage only seems to be to the bottom part of the casing.
It looks like it's engine out to repair this.
Can I split the gearbox bottom without a complete engine strip?
My repair options seem to be: rebuild the area with epoxy putty. Stick the broken bits back in with epoxy or get the casing welded. That is my favourite. I could get the casing built up with weld or weld the broken bits back in.
What do you guys think?
I'm a capable mechanic type but with little experience on bikes.
The rest of the bike is ok. I don't want to sell it and like the idea of keeping as many original parts as possible.
Thanks in advance
John

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